Lagrangian pathways under the Filchner-Ronne Ice Shelf and in the Weddell Sea
The study’s objective is to construct Lagrangian pathways under the Filchner-Ronne Ice Shelf (FRIS) and in the Weddell Sea using the data of numerical simulation of currents and Lagrangian numerical methods. The results of modeling the circulation, temperature, and salinity in the Weddell Sea and th...
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ftzenodo:oai:zenodo.org:8066184 2023-07-16T03:54:18+02:00 Lagrangian pathways under the Filchner-Ronne Ice Shelf and in the Weddell Sea Maderich, V. Bezhenar, R. Brovchenko, I. Bezhenar, A. Boeira Dias, F. Uotila, P. 2023-02-15 https://zenodo.org/record/8066184 https://doi.org/10.33275/1727-7485.2.2022.700 eng eng info:eu-repo/grantAgreement/EC/H2020/101003590/ https://zenodo.org/communities/polarres https://zenodo.org/record/8066184 https://doi.org/10.33275/1727-7485.2.2022.700 oai:zenodo.org:8066184 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode info:eu-repo/semantics/article publication-article 2023 ftzenodo https://doi.org/10.33275/1727-7485.2.2022.700 2023-06-27T23:02:04Z The study’s objective is to construct Lagrangian pathways under the Filchner-Ronne Ice Shelf (FRIS) and in the Weddell Sea using the data of numerical simulation of currents and Lagrangian numerical methods. The results of modeling the circulation, temperature, and salinity in the Weddell Sea and the FRIS cavity from the Whole Antarctica Ocean Model were used to run the particle-tracking model (Parcels) for computing Lagrangian particle trajectories. The basic version of the Parcels model does not have an option for particle reflection from the solid boundaries, including the ice shelf. Therefore, the corresponding kernel was used in the study. To avoid errors in interpolation near the solid boundary when the model algorithm cannot find enough grid nodes around the particle, the function of particle recovery was implemented. To analyze the movement variations of the water masses under the FRIS, a set of particles was released in the Ronne Depression near the ice shelf front. Simulation continued for 20 years of particle movement. Particles were released at two depths: 350 m and 500 m, every 4 hr within the first 365 days. To characterize the redistribution of water masses, we calculated the ‘visitation frequency’, i.e., the percentage of the particles that visited each 2 × 2 km grid column at least once in a modeling period. The mean age of visits was also calculated to characterize the age of water masses. The results of this analysis generally agreed with schemes based on water mass analysis. The released particles first move southward along the Ronne Trough. The flow then turns to the east, reaching the passage between Berkner Island and Henry Ice Rise after three years. After ten years, the released particles reach the Filchner Trough, through which water flows out to the shelf of the southern part of the Weddell Sea. Over time, the particles penetrate all parts of the cavity. The particles also cross the Ronne Shelf front and are carried away by currents on the Weddell Sea shelf. In 20 years, almost the ... Article in Journal/Newspaper Antarc* Antarctica Berkner Island Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea Zenodo Weddell Sea Weddell Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Filchner Trough ENVELOPE(-36.000,-36.000,-77.000,-77.000) Berkner Island ENVELOPE(-48.117,-48.117,-79.333,-79.333) Henry Ice Rise ENVELOPE(-62.000,-62.000,-80.583,-80.583) Ukrainian Antarctic Journal 20 2 |
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Open Polar |
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Zenodo |
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ftzenodo |
language |
English |
description |
The study’s objective is to construct Lagrangian pathways under the Filchner-Ronne Ice Shelf (FRIS) and in the Weddell Sea using the data of numerical simulation of currents and Lagrangian numerical methods. The results of modeling the circulation, temperature, and salinity in the Weddell Sea and the FRIS cavity from the Whole Antarctica Ocean Model were used to run the particle-tracking model (Parcels) for computing Lagrangian particle trajectories. The basic version of the Parcels model does not have an option for particle reflection from the solid boundaries, including the ice shelf. Therefore, the corresponding kernel was used in the study. To avoid errors in interpolation near the solid boundary when the model algorithm cannot find enough grid nodes around the particle, the function of particle recovery was implemented. To analyze the movement variations of the water masses under the FRIS, a set of particles was released in the Ronne Depression near the ice shelf front. Simulation continued for 20 years of particle movement. Particles were released at two depths: 350 m and 500 m, every 4 hr within the first 365 days. To characterize the redistribution of water masses, we calculated the ‘visitation frequency’, i.e., the percentage of the particles that visited each 2 × 2 km grid column at least once in a modeling period. The mean age of visits was also calculated to characterize the age of water masses. The results of this analysis generally agreed with schemes based on water mass analysis. The released particles first move southward along the Ronne Trough. The flow then turns to the east, reaching the passage between Berkner Island and Henry Ice Rise after three years. After ten years, the released particles reach the Filchner Trough, through which water flows out to the shelf of the southern part of the Weddell Sea. Over time, the particles penetrate all parts of the cavity. The particles also cross the Ronne Shelf front and are carried away by currents on the Weddell Sea shelf. In 20 years, almost the ... |
format |
Article in Journal/Newspaper |
author |
Maderich, V. Bezhenar, R. Brovchenko, I. Bezhenar, A. Boeira Dias, F. Uotila, P. |
spellingShingle |
Maderich, V. Bezhenar, R. Brovchenko, I. Bezhenar, A. Boeira Dias, F. Uotila, P. Lagrangian pathways under the Filchner-Ronne Ice Shelf and in the Weddell Sea |
author_facet |
Maderich, V. Bezhenar, R. Brovchenko, I. Bezhenar, A. Boeira Dias, F. Uotila, P. |
author_sort |
Maderich, V. |
title |
Lagrangian pathways under the Filchner-Ronne Ice Shelf and in the Weddell Sea |
title_short |
Lagrangian pathways under the Filchner-Ronne Ice Shelf and in the Weddell Sea |
title_full |
Lagrangian pathways under the Filchner-Ronne Ice Shelf and in the Weddell Sea |
title_fullStr |
Lagrangian pathways under the Filchner-Ronne Ice Shelf and in the Weddell Sea |
title_full_unstemmed |
Lagrangian pathways under the Filchner-Ronne Ice Shelf and in the Weddell Sea |
title_sort |
lagrangian pathways under the filchner-ronne ice shelf and in the weddell sea |
publishDate |
2023 |
url |
https://zenodo.org/record/8066184 https://doi.org/10.33275/1727-7485.2.2022.700 |
long_lat |
ENVELOPE(-61.000,-61.000,-78.500,-78.500) ENVELOPE(-36.000,-36.000,-77.000,-77.000) ENVELOPE(-48.117,-48.117,-79.333,-79.333) ENVELOPE(-62.000,-62.000,-80.583,-80.583) |
geographic |
Weddell Sea Weddell Ronne Ice Shelf Filchner Trough Berkner Island Henry Ice Rise |
geographic_facet |
Weddell Sea Weddell Ronne Ice Shelf Filchner Trough Berkner Island Henry Ice Rise |
genre |
Antarc* Antarctica Berkner Island Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea |
genre_facet |
Antarc* Antarctica Berkner Island Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea |
op_relation |
info:eu-repo/grantAgreement/EC/H2020/101003590/ https://zenodo.org/communities/polarres https://zenodo.org/record/8066184 https://doi.org/10.33275/1727-7485.2.2022.700 oai:zenodo.org:8066184 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.33275/1727-7485.2.2022.700 |
container_title |
Ukrainian Antarctic Journal |
container_volume |
20 |
container_issue |
2 |
_version_ |
1771551503415246848 |